66665002 has 8 divisors (see below), whose sum is σ = 100354212. Its totient is φ = 33213600.

The previous prime is 66664993. The next prime is 66665021. The reversal of 66665002 is 20056666.

It can be written as a sum of positive squares in 2 ways, for example, as 65270241 + 1394761 = 8079^2 + 1181^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58749 + ... + 59872.

Almost surely, 2^66665002 is an apocalyptic number.

66665002 is a deficient number, since it is larger than the sum of its proper divisors (33689210).

66665002 is a wasteful number, since it uses less digits than its factorization.

66665002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118904.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 66665002 is about 8164.8638690428. The cubic root of 66665002 is about 405.4767580638.

The spelling of 66665002 in words is "sixty-six million, six hundred sixty-five thousand, two".